On Mon, Sep 04, 2017 at 12:31:33PM +0200, gregkh@xxxxxxxxxxxxxxxxxxx wrote:
>
> The patch below does not apply to the 4.12-stable tree.
> If someone wants it applied there, or to any other stable or longterm
> tree, then please email the backport, including the original git commit
> id to <stable@xxxxxxxxxxxxxxx>.
>
> thanks,
Hi Greg,
try this one
--- 8< ---
>From c10e7d67283fc37c029ef6072394002a51d3da60 Mon Sep 17 00:00:00 2001
From: Changpeng Liu <changpeng.liu@xxxxxxxxx>
Date: Thu, 31 Aug 2017 11:22:49 +0800
Subject: [PATCH] nvme: fix the definition of the doorbell buffer config
support bit
[ commit 223694b9ae8bfba99f3528d49d07a740af6ff95a upstream ]
NVMe 1.3 specification defines the Optional Admin Command Support feature
flags, bit 8 set to '1' then the controller supports the Doorbell Buffer
Config command. Bit 7 is used for Virtualization Mangement command.
Signed-off-by: Changpeng Liu <changpeng.liu@xxxxxxxxx>
Reviewed-by: Sagi Grimberg <sagi@xxxxxxxxxxx>
Reviewed-by: Max Gurtovoy <maxg@xxxxxxxxxxxx>
Reviewed-by: Johannes Thumshirn <jthumshirn@xxxxxxx>
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
Fixes: f9f38e33 ("nvme: improve performance for virtual NVMe devices")
Cc: stable@xxxxxxxxxxxxxxx
---
include/linux/nvme.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/nvme.h b/include/linux/nvme.h
index b625bacf37ef..f4f9481a0c8a 100644
--- a/include/linux/nvme.h
+++ b/include/linux/nvme.h
@@ -245,7 +245,7 @@ enum {
NVME_CTRL_ONCS_WRITE_ZEROES = 1 << 3,
NVME_CTRL_VWC_PRESENT = 1 << 0,
NVME_CTRL_OACS_SEC_SUPP = 1 << 0,
- NVME_CTRL_OACS_DBBUF_SUPP = 1 << 7,
+ NVME_CTRL_OACS_DBBUF_SUPP = 1 << 8,
};
struct nvme_lbaf {
--
2.13.5
--
Johannes Thumshirn Storage
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SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg
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